[egenix-users] mx.DateTime and Glibc 2.3

[M.-A. Lemburg]

Justin Ryan wrote:
> Hello,
> 
> I'm having some trouble with mx.DateTime which I beleive is related to
> Glibc v2.3 - however I'm not 100% sure, and would not be able to file a
> relevant bug report against glibc without a bit more information.
> 
> Essentially, mx.DateTime is raising an exception with pre-1970 dates
> when trying to access a DateTime object's ticks() method.  On other
> systems, a negative integer is returned.

Note that the negative ticks range is mostly undefined,
so this is not really a bug in the C lib. Many systems
do return negative values for dates before 1970, but
some don't and return an error instead (this is what
you see under gibc 2.3).

> I was able to install debian stable (glibc 2.2), and do ssomething like
> the following:
> 
> <- snip ->
> 
> $ python
> Python 2.2 (#1, Apr 25 2002, 17:44:12)
> [GCC egcs-2.91.66 19990314/Linux (egcs-1.1.2 release)] on linux2
> Type "help", "copyright", "credits" or "license" for more information.
> 
>>>>from mx.DateTime import DateTime
>>>>d = DateTime( 1960 )
>>>>print d
> 
> 1960-01-01 00:00:00.00
> 
>>>>d.ticks()
> 
> -315597600.0
> 
> 
> <- snip ->
> 
> I then upgraded my glibc and nothing else, with the following result:
> 
> <- snip ->
> 
> $ python
> Python 2.2.2 (#1, Jan 18 2003, 10:18:59)
> [GCC 3.2.2 20030109 (Debian prerelease)] on linux2
> Type "help", "copyright", "credits" or "license" for more information.
> 
>>>>from mx.DateTime import DateTime
>>>>d = DateTime( 1960 )
>>>>print d
> 
> 1960-01-01 00:00:00.00
> 
>>>>d.ticks()
> 
> Traceback (most recent call last):
> File "<stdin>", line 1, in ?
> mx.DateTime.Error: cannot convert value to a time value
> 
> 
> <- snip ->
> 
> Because I am not familiar with the c sources to mxdatetime, it's
> difficult for me to troubleshoot this.  Any help is much appreciated -
> even if it is only providing enough information / guidance to file a
> relevant report against glibc.
> 
> Thanks in advance,
> 
> -Justin
> 
> _______________________________________________________________________
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-- 
Marc-Andre Lemburg
eGenix.com

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